Circadian Rhythms 5.0 / 5 based on 1 rating ? PsychologySleepA2/A-levelAQA Created by: Keyleigh-StormCreated on: 29-05-16 15:31 8610321579 Across 1. Who altered participants' circadian rhythms down to 22 hours and up to 28 hours just using dim lighting? (8, 2, 2) 2. Who found that morning people prefer to rise early and go to bed early (6am & 10pm) whereas evening people prefer to wake and go to bed later (10am & 1am)? (5, 2, 2) 7. Circadian rhythms are those that last ----------- hours & the two best known ones are the sleep-wake cycle and the body temperature cycle. (6, 4) 8. One important type of individual difference is the cycle ------. (6) 9. One important type of individual difference is the cycle ----- (individuals appear to be innately different in terms of when their circadian rhythms reach their peak). (5) Down 2. IDA - The explanations for circadian rhythms suggest that sleep-wake patterns are fixed (-----------) by internal mechanisms. (10) 3. Who found that circadian cycles in different people can vary from 13 to 65 hours? (8, 2, 2) 5. Early research studies suffered a flaw when estimating the free-running cycle of the human circadian rhythm (participants were isolated from daylight but not ---------- light as they thought it would have no effect). (10) 6. Who found that performance on IQ tests was best at 7pm as compared with 9am or 2pm? (5) 10. ------- production also follows a circadian rhythm. (7)
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